1345739444 has 12 divisors (see below), whose sum is σ = 2691478944. Its totient is φ = 576745464.

The previous prime is 1345739443. The next prime is 1345739459. The reversal of 1345739444 is 4449375431.

1345739444 is an admirable number.

It is a super-2 number, since 2×1345739444² = 3622029302274858272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1345739395 and 1345739404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345739443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24031034 + ... + 24031089.

It is an arithmetic number, because the mean of its divisors is an integer number (224289912).

Almost surely, 2^1345739444 is an apocalyptic number.

1345739444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1345739444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1345739444 is a wasteful number, since it uses less digits than its factorization.

1345739444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48062134 (or 48062132 counting only the distinct ones).

The product of its digits is 725760, while the sum is 44.

The square root of 1345739444 is about 36684.3215011536. The cubic root of 1345739444 is about 1104.0455559949.

The spelling of 1345739444 in words is "one billion, three hundred forty-five million, seven hundred thirty-nine thousand, four hundred forty-four".